Clusters phosphine stabilized

Here, we have used this method for the synthesis of Au SG clusters. Undecagold clusters (Aun ) stabilized by triphenyl phosphine (TFF) were prepared according to the literature [6]. An aqueous solution of GSH was placed on top of a chloroform solution of Au TFF. The Au SG clusters were transferred to the aqueous phase as a result of ligand exchange reactions [19]. 

Shichibu Y, Negishi Y, Tsukuda T (2005) Large-scale synthesis of thiolated Au25 clusters via ligand exchange reactions of phosphine-stabilized Aun clusters. J Am Chem Soc 127 13464-13465... 

This section is divided into two main subsections. The first describes the synthesis and characterization of phosphine-stabilized gold clusters. The second focuses on the synthesis and characterization of thiol-stabilized gold clusters and the study of other stabilizers such as arsines or boranes are described. 

Synthesis and Structural Characterization of Phosphine-Stabilized Cold Clusters... 

C. C. Chusuei, X. Lai, K. A. Davis, E. K. Bowers, J. P. Fackler, D. W. Goodman, A nanoscale model catalyst preparation Solution deposition of phosphine-stabilized gold clusters onto a planar TiO2(110) Support, Langmuir 17 (2001) 4113. 

N-3 Phosphine-stabilized Au(I) ions can replace protons of amino groups. The Au(I) clusters in complexes 73 and 74 have pyramidal geometry with N atoms at die apex in each triangular cluster Au—Au distances are 0.30 0.01 nm181. See also items N-4 and P-6 below. 

Homogeneous catalysis of H2 -D2 equilibration by Pt-Au phosphine stabilized cluster compounds... 

J. Kilmartin, R. Sarip, R. Grau-Crespo, D. Di Tommaso, G. Hogarth, C. Prestipino and G. Sankar, Following the Creation of Active Gold Nanocatalysts from Phosphine-Stabilized Molecular Clusters, AGS Catal, 2012, 2, 957-963. 

Palladium forms clusters of these types far less readily than nickel and platinum, unless they are stabilized by o-donor ligands such as phosphines. This may be due to the lower energy of Pd-Pd bonds as reflected in the sublimation energies, 427, 354 and 565 kJ mol for Ni, Pd and Pt. 

Figure 19 explains what in principle happens the cluster monolayer on the dendrimer film is mobilized by means of CH2CI2 vapour (a b). The phosphines are then removed by the SH functions (b->c). The bare AU55 nanoclusters move between the dendrimer molecules to form crystals (Auss) which finally appear on the surface (c d). The formation of crystalline superlattices of naked AU55 particles proves their stability which is founded in their perfect cuboctahedral shape. The (Auss) species is a novel modification of the element gold. 

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